Social Security Number Verification Service
CBSV is a fee and consent-based Social Security number (SSN) verification service available to enrolled private companies and Federal, State and Local government agencies. It provides instant, automated verification and it easily handles large volume requests. Using CBSV, participating companies can verify the SSNs of their customers and clients. An Employer Identification Number (EIN) is required to enroll and become a CBSV user.